Definition: You are given a question on anatomy. Anatomy is the science that studies the structure of the body. You are also given 4 answer options (associated with "A", "B", "C", "D"), out of which only one is correct. You need to answer the question by selecting the correct option. You should only answer with the choice letter, not the whole answer.
Input: The mucosa of the upper larynx is innervated by the
(A)internal laryngeal nerve which is the afferent limb of the cough reflex. (B)external laryngeal nerve which is the afferent limb of the gag reflex. (C)internal laryngeal nerve which is the afferent limb of the gag reflex. (D)external laryngeal nerve which is the afferent limb of the cough reflex.

A